SOLAR RADIATION AMOUNT PREDICTION METHOD, SOLAR RADIATION AMOUNT PREDICTION PROGRAM, POWER SUPPLY SYSTEM AND POWER/HEAT SUPPLY SYSTEM

To enable accurately performing solar radiation amount prediction in a relatively narrow range, to enable performing power generation amount prediction of a photovoltaic power generation facility, and to improve utilization efficiency of photovoltaic power generation.SOLUTION: A solar radiation amount prediction method comprises the steps of: preliminarily calculating a base solar radiation amount for each time from sunrise to sunset in a specific area; measuring a solar radiation amount in the specific area to calculate a ratio of the measured value to the base solar radiation amount at measurement time; and predicting the solar radiation amount at time after set time on the basis of the base solar radiation amount at the time after the set time from the measurement time, using the ratio.SELECTED DRAWING: Figure 1 【課題】比較的狭い範囲の日射量予測を高い精度で行うことができるようにすること、太陽光発電設備の発電量予測を可能にし、太陽光発電の利用効率を高めること。【解決手段】日射量予測方法は、特定の区域での日の出から日の入りまでの時刻毎のベース日射量を予め求め、特定の区域での日射量を計測して、その計測値と計測時刻におけるベース日射量との比率を求め、比率を用いて、計測時刻から設定時間後の時刻におけるベース日射量に基づいて、設定時間後の時刻における日射量を予測する。【選択図】図１